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ankoles [38]
4 years ago
14

Rocks that are melted by heat and then cooled are classified as: igneous sedimentary metamorphic.

Chemistry
2 answers:
Gnom [1K]4 years ago
8 0
The answer is igneous
Deffense [45]4 years ago
6 0

Answer:

Igneous rocks

Explanation:

Igneous rocks are usually defined as those rocks that are formed from the crystallization and solidification of magma. This magma are originated from the interior of the earth as well as the melting of the rocks.This heating of magma occurs due to the increase in the temperature, and when these magma are cooled and hardened, the extrusive and intrusive types of igneous rocks are formed. For example, Granite (intrusive igneous), Basalt (extrusive igneous).

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What is the resistance of a 150 W lightbulb connected to a 24 V voltage source?
Luda [366]

Answer:

3.84 Ω

Explanation:

From the question given above, the following data were obtained:

Electrical power (P) = 150 W

Voltage (V) = 24 V

Resistance (R) =?

P = IV

Recall:

V = IR

Divide both side by R

I = V/R

P = V/R × V

P = V² / R

Where:

P => Electrical power

V => Voltage

I => Current

R => Resistance

With the above formula (i.e P = V²/R), we can calculate resistance as illustrated below:

Electrical power (P) = 150 W

Voltage (V) = 24 V

Resistance (R) =?

P = V²/R

150 = 24² / R

150 = 576 / R

Cross multiply

150 × R = 576

Divide both side by 150

R = 576 / 150

R = 3.84 Ω

Thus, the resistance is 3.84 Ω

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Explanation:

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KIM [24]

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